<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    body {
      background: #222;
    }
    .title {
      position: relative;
      height: 50px;
      width: 200px;
      color: #fff;
      text-align: center;
      line-height: 30px;
      background: radial-gradient(ellipse at top, rgba(0, 155, 255, .8), rgba(0, 155, 255, .5), transparent, transparent, transparent),
      radial-gradient(ellipse at bottom, transparent, transparent);
    }
    .title:after {
      position: absolute;
      content: '';
      display: flex;
      top: 0;
      width: 100%;
      height: 2px;
      background: radial-gradient(#15fefc, transparent);
    }
  </style>
</head>
<body>

<div class="title">
  融合通讯
</div>
<script>
var map = new Map([['xxx', {name: 'xxx'}]])

const xxx = map.get('xxx');
console.log(xxx)

xxx.name = 'vvv';

const vvv = map.get('xxx');
console.log(vvv)
</script>
</body>
</html>